How many movies have Kensaku Hara and Michihei Muramatsu collaborated on?

They have worked on 12 movies together! Their first movie together was Mito Kōmon Manyu-ki (1938) while their highest rated movie together was Yakuza of Ina (1960). They have not worked together since Yakuza of Ina (1960). They are most known for their drama films together.